摘要
交-交矩阵变换器以其单位输入功率因数和良好的正弦输入电流和输出电压等优点,被誉为“绿色”变换器。它可消除目前多样性负载给电网带来的严重谐波污染和低功率因数等负面影响,在电力电子领域蕴藏着良好的应用前景。针对可能出现的输入电压不对称情况,改进了双空间矢量调制策略,有效抑制了因输入电压不对称而引起的输出电压谐波,得到了对称的三相输出电压。为验证改进方法的正确性,利用数字信号处理器(Digital SignalProcessing,简称DSP)和复杂可编程逻辑器(Complex Programmable Logic Device,简称CPLD)译码电路作为控制器,制作了原理样机,并对改进策略进行了实验验证,给出了实验波形。
AC-AC matrix converter （MC） is a new no-pollution converter,because it has some advantages as omitting the DC part,obtaining unit power factor and getting sinusoidal input currents and output voltages and so on.h contains a good applied foreground in the power electronics field to solve serious harmonious pollution and the low power factor which give to the electric net.For the possible unbalanced input voltage, this paper presents an improved method based on double space vector modulation strategy,which can effectively reduce the output harmonic components under unbalan-ced input voltages,and the three-phase balanced sine waves are obtained.In order to verify the validity of improved method, the prototype converter is built by using DSP and CPLD to control it and the experimental waves are given.
出处
《电力电子技术》
CSCD
北大核心
2007年第4期24-27,共4页
Power Electronics
基金
航空科技支撑基金(04C52012)
台达电力电子科教发展基金(20531-032)~~
关键词
变换器
矩阵
矢量
调制
converter
matrix
vector
modulation
